DM 4000

	Universal, Pulse or Flow Measurement
	6 Digit display
	Front Panel Sealed to NEMA 4
	Analog Output Option
	1, 2, 3 or 4 Alarm Option
	RFI Protected Metal Case
	Serial Communications
	Rate or Total Display
	5 Year Warranty

SMART INDICATOR
DM4000 Series

INTRODUCTION
The DM4000 is a highly accurate digital process indicator, available in three versions:

DM4000U	accepts common industrial sensors
DM4000C	accepts various types of pulse inputs to provide RATE and TOTAL functions.
DM4000A	is a dedicated Flow Computer accepting analog inputs and providing RATE and TOTAL functions.

A wide range of options are available enabling the DM4000 to be used in a variety of applications. Two output slots are provided, each of which can accept either a single or dual alarm relay output, an isolated 4 to 20 ma output card or a bridge excitation card. A dedicated communications slot is also provided which can accept an RS485 serial digital communications card.

The sensor type and range are user configurable, either from the front panel or via the optional serial communications port. All ranges are fully calibrated which means the user can change quickly and easily from one sensor type to another. The analog outputs can be any part of the incoming range allowing the DM4000 to be used as a 'smart' sensor transmitter.

The NEMA 4 sealed front panel protects the DM4000 against environmental conditions such as water and dust.

Reduced stock holding due to the versatility of the DM4000 combined with it's exceptional accuracy and stability and 5 year warranty, provides for a 'low cost of ownership'.

APPLICATIONS

	Process monitoring
	Strain gage measurement
	Flow measurement
	Alarm monitoring
	Data logging
	Batch controlling
	Speed measurement
	Data Acquisition

GENERAL FEATURES
Display - When used as an analog or frequency indicator, 5 digit resolution is provided. The Totalizer has 12 digit resolution displayed in two 6 digit displays. Display update rate is 13.3 Hz.

Programming - All parameters can be entered from 3 keys on the from panel or via the optional communications port. Programming is done by pressing combinations of the three sealed front panel keypads through a series of menus which are displayed on the 6 digit display in helpful mnemonics. Lack of keypad use returns the instrument to the run mode. The keys are used individually to review setpoints and clear latched alarms.

Communications - RS485 communications are optional. By using an RS485/232 converter unit, up to 99 DM4000s may be connected to a host computer to allow access to all configuration and process variable information. In addition, the Remote Configuration Package (RCP4000) is available which allows rapid configuration via a PC. Although 99 DM4000s can be interfaced on the network RS485 requires additional buffering for more than 32 units.

Front Panel - The front panel membrane is sealed to NEMA 4. User replaceable legends and identifying tags are protected by the membrane.

Filter - The input has a programmable 'Smart' digital filter which can be used to smooth out noisy signals.

Self Testing - Background self testing is continuous and an internal watchdog monitors the correct operation of the internal microprocessor.

OUTPUTS
Two output slots are provided which can accept a variety of output option cards.

	1, 2, 3 or 4 alarm relays/pulse outputs
	4 to 20 ma isolated analog outputs
	Programmable excitation voltage

All alarms can be: High, Low or Deviation and have programmable hysterisis. They can be set to fail safe high or low and can be latching or non-latching. The analog output can be any part of the input range.

In the DM4000A and C versions the relay output can be programmed to give a 100 ms output at decade intervals from the TOTAL display. (e.g.. every 10 GAL or 100 GAL etc.)

OPTIONS SPECIFICATIONS @ 68 °F

.OPTION 01	.Single Relay Output Card
.Relay	.Single programmable alarm relay. .Normally open and normally closed output available.
.Rating	.8 amps @ 240 V
.Isolation	.500 V with respect to inputs*

.OPTION 02	.Dual Relay Output Card
.Relay	.Two independently programmable alarms sharing the same common.
.Rating	.8 amps @ 240 V
.Isolation	.500 V with respect to inputs*

.OPTION 03	.Current Output
.	.The output can be driven by either an internal or external power source.
.Accuracy	.<0.1% of full scale
.Resolution	.<0.1% of full scale (>10% of the input range)
.Power	.Internal supply will drive into 700 ohms .External loop voltage 10 to 30 VDC
.Isolation	.500 V with respect to inputs*
.Response	.<100 ms for 63% step change
.Output	.Minimum 0 ma .Maximum 22 ma

.OPTION 04	.Bridge Excitation (Strain Gage)
	.This provides either a programmable 2 to 20 VDC output .or a fixed 24 VDC stable output
.Range	.2 to 24 VDC
.Accuracy	.<0.1% of full scale
.Isolation	.500 V with respect to inputs*
.Stability	.<56 ppm/ºF
.Output	.50 ma max. (less current consumed by other output slot)
.Ripple	.<0.05% full scale @ 50 ma
NOTES....	..* Isolation is supplied between inputs, outputs and communication slots but not between two analog output slots.

ENVIRONMENTAL SPECIFICATION

.Ambient Temp. Range	.32 to 122 ºF
.Relative Humidity	.5 to 95% RH non-condensing
.Isolation	.Inputs fully isolated 500 V
.Power Supply	.120 VAC 50/60 Hz .240 VAC 50/60 Hz .24 VAC 50/60 Hz .fully isolated to 1.5 KV

DM4000U - UNIVERSAL INPUT PROCESS INDICATOR
The DM4000U is a universal digital indicator which can be configured from the front panel to take all common industrial sensors without the need to change option boards or move jumpers. There are two output slots which can accept any of the optional output boards.

DM4000U SPECIFICATIONS @ 68 °F

.THERMOCOUPLE	± ACCURACY*	RESOLUTION**	NOMINAL RANGE
.TC Type K	2 ºF	0.1 ºF	-454 to 2192 ºF
.TC Type J	2 ºF	0.1 ºF	-346 to 1400 ºF
.TC Type T	2 ºF	0.1 ºF	-454 to 752 ºF
.TC Type R	4 ºF	0.5 ºF	+32 to 3182 ºF
.TC Type S	4 ºF	0.5 ºF	+32 to 3182 ºF
.TC Type E	2 ºF	0.5 ºF	+32 to 1202 ºF
.TC Type F	2 ºF	0.5 ºF	+32 to 1112 ºF
.TC Type N	2 ºF	0.5 ºF	+32 to 2372 ºF
.TC Type B	4 ºF	0.5 ºF	+1832 to 3272 ºF
.Cold Junction	1 ºF	0.1 ºF	+32 to 122 ºF

.RTD	± ACCURACY	RESOLUTION	NOMINAL RANGE
.Pt100	0.2 ºF±0.1% of reading	0.02 ºF	-328 to 1472 ºF

.VOLTAGE	± ACCURACY	RESOLUTION	NOMINAL RANGE
.10 Volts	0.02% of full scale	0.004%	-10 to +10 V
.1 to 5 Volts	0.04% of full scale	0.008%	1 to +5 V
.1 volt	0.02% of full scale	0.004%	±1 V
.100 mV	0.02% of full scale	0.004%	±0.1 V

.CURRENT	± ACCURACY	RESOLUTION	NOMINAL RANGE
.4 to 20 ma	0.1% of full scale	0.004%	4 to 20 ma
.0 to 20 ma	0.1% of full scale	0.004%	0 to 20 ma
.0 to 10 ma	0.2% of full scale	0.008%	0 to 10 ma

A/D conversion rate is 10 per second

.Notes:
.* .**	Accuracy includes linearization and cold junction tracking errors for a 50 ºF to 104 ºF ambient temperature for thermocouple inputs. Resolutions shown are theoretical maximums, however, resolution is programmable as is the position of the decimal point for engineering ranges. A/D resolution is 1 part in 25,000 (approximately 15 Bit plus sign)

USER LINEARIZATION
A user defined linearization table is provided for non-linear functions. In addition, the user can select a square root, power 3/2 or power 5/2 function. All displays are in engineering units. This feature is only available for voltage and current inputs.

FIELD TRANSMITTER SUPPLY
An internal 21 VDC supply to power two wire 4 to 20 ma field transmitters is standard. A programmable excitation supply for transducers is available as an option.

DM4000C - PULSE INPUT RATE or TOTAL INDICATOR
The DM4000C accepts all types of pulse inputs and provides a choice of RATE or TOTAL displays. RATE is in engineering units and TOTAL can have its own scaling. The TOTAL can be reset locally from the front or remotely from an external contact and is stored during power down.

The instrument has two individual inputs channels 'a' and 'b'. Either channel may be designed as the prime frequency input channel or alternatively as the control channel. User selection of channels is determined by the type of input.

Input signals accommodated by the channels are as follows:

Input Type	Channel
Volt free contact	a, b
TTL Input	b
10 mv low level Input	b
NAMUR compatible signals	a
Open collector NPN	b
Open collector PNP	a

Frequency Range
0.03 Hz to 50 Hz for potential free contacts
0.03 Hz to 20K Hz for all other input types

Debounce
A 4 ms Debounce is available to eliminate edge jitter for frequencies below 50 Hz.

Frequency Measurement
The incoming frequency is measured by a combination of period measurement and pulse counting. A 100 ms window is used for all incoming frequencies above 10 Hz. This is called the capture window. For frequencies below 10 Hz the capture window becomes the actual incoming period. The following table illustrates the point.

.Frequency	<0.03	0.03 to 10	10 to 20K	20K to 25K
.Capture Window	30 sec******	Period* & ******	100 mS
.Display*****	Lo**	Frequency Totalize***		Over****

.Notes:
.* . .* .** .* .****	Period is actual incoming period Lo is engineering low range Frequency and Total are scaled in engineering units OVER is overrange Display refresh rate is always 3.3 Hz Capture window is halved when Debounce is selected (Below 50 Hz)

Characterization
A 12 point user linearization table is provided as is selectable 'Cut lo' feature which automatically sets the Rate to engineering low range for frequencies that fall below this programmable value. Relay options may be configured as alarms or pulse output if used in conjunction with total.

FIELD TRANSMITTER SUPPLY
An internal 8 VDC power supply to power field transmitters is standard.

DM4000A - ANALOG INPUT FLOW COMPUTER INDICATOR
The DM4000A is a combination of the analog input handling of the DM4000U with RATE and TOTAL functions of the DM4000C providing a special instrument designed for flow measurement applications.

The input can be either voltage or current and it is normally used in conjunction with a differential pressure sensor and some type of restriction e.g. orifice plate, flume, rectangular or 'V' weirs, to provide a digital representation of flow.

DM4000A SPECIFICATIONS @ 68 °F

Sensor	± Accuracy	Resolution	Nominal Range
.Voltage
± 10 Volts	0.02% FS	0.004%	± 10 V
1 to 5 Volts	0.04% FS	0.008%	1V to +5 V
± 1 Volt	0.02% FS	0.004%	±1 V
± 100 mv	0.02% FS	0.004%	±0.1 V
.Current
4 to 20 ma	0.1% FS	0.004%	4 to 20 ma
0 to 20 ma	0.1% FS	0.004%	0 to 20 ma
0 to 10 ma	0.2% FS	0.008%	0 to 10 ma

.Characterization	.Linear
	.Square Root (Orifice Plate)
	.Power 3/2 (Rectangular Weir/Flume)
	.Power 5/2 (45 degree V Weir)
	.User: User defined 13 points
.Display	.Rate: 5 digits
.Display	.Totalize: 6 digits + 6 overflow
.Special Feature	.Programmable 100 ms pulse output
.Special Feature	.(when option 01 or 02 are fitted)

The appropriate characterization can be selected from the front panel and the display scaled in linear flow units. In addition, a 13 point user defined characterization is available for the more unusual applications.

The display may be selected to show RATE or TOTAL; TOTAL having its own user programmable scaling. When displaying flow RATE, totalizing is performed in the background and pressing a front panel key provides a 'View' facility. If TOTAL is selected as the main display, it is possible to 'View' the instantaneous RATE.

Output options can be dedicated to either RATE or TOTAL and the TOTAL is maintained during power down stored in EEPROM.

In addition, the relay output option can be configured as a pulse output giving a contact closure for 100 ms every time there is a change in a particular selectable digit on the TOTAL display, i.e. the contact will close for 100 ms say every 100 gallons. This provides a low cost means of interfacing with data logging systems or to drive additional secondary counters.

FIELD TRANSMITTER SUPPLY
An internal 21 VDC supply to power two wire 4 to 20 ma field transmitters is standard. A programmable excitation supply for transducers is available as an option.

DOWNLOADS
DM4000 Literature

ORDER CODE

DM4000(Type) / Option 1 / Option 2 / Comms / Supply

.DM4000 Basic Model Number
.Type	.U = Universal Input .C = Pulse Input .A =Flow Computer
.Options	.01 = Single programmable alarm relay 8 amps single pole. .02 = Dual independently programmable alarm relays 8 amps single pole, N/C (shared common). .03 = 4 to 20 ma isolated analog output or a voltage output by the addition of an external resistor. .04 = 2 to 20 VDC programmable plus 24 VDC transducer excitation voltage.
.Communications	.000 = No Communications .485 =RS485 comms - multi drop
.Supply	.240 = 240 VAC 50/60 Hz .120 = 120 VAC 50/60 Hz ...24 = 24 VAC 50/60 Hz

ACCESSORIES

ACC4000-01	Wall mounted enclosure to NEMA 4
ACC4000-02	Adaptor for 1/4 to 1/8 DIN
ACC4000-03	Spare 3 way connector
ACC4000-04	Spare Handbook
ACC4000-05	Spare 5 way connector
ACC4000-06	Pack of 10 sealed gaskets