DPM4004
Product Information
The DPM4004 load cell indicator is an easy-to-use precision programmable digital indicator for load cell & strain gauge applications. Inputs to the instrument include load cell input (6 wire) and two digital inputs for remote tare and remote peak hold reset (optional). The excitation includes sense feedback to compensate for cable voltage loss. Digital filtering for better stability and tare function is included as standard. Options include programmable analogue output, set-points (up to four alarms), peak or valley hold, RS-232/485 serial interfaces & more.
A feature of these programmable indicators is the calibration method. The instrument can be pre-calibrated without load cell connections for zero & full scale values, & then on-site calibration can be done for deadweight offset & span calibration (single point test weight trim).
- User selectable excitation for normal or barriered applications (Atex applications)
- 5Vdc excitation is selected)
- Low cost – high performance design
- Simple on-site calibration for deadweight & single point span calibration
- 4-wire bipolar excitation (6 wires total)
- Meets European EMC directive 89/336/EEC
General
| Display | 4 digit : -1999 to 9999 |
| Display | Colour : Red |
| Display | Size : 14.2mm |
| Display | Type : 7 Segments LED |
| Enviromental | Humidity : < 85% non-condensing |
| Enviromental | Operating temperature range : -10 to +50°C |
| Enviromental | Service temperature range : -15 to +60°C |
| Enviromental | Storage temperature range : -40 to +80°C |
| Front panel rating | IP 65 / NEMA 4 / UL Type 4 with supplied o-ring seal |
| Mounting | Panel Mounted |
| Physical | Cut out Size : 48mm x 96mm |
| Physical | Size : 48mm x 96mm x 147mm |
| Physical | Weight : approx. 385g (no options fitted) |
| Power Supply | Optional : 8 – 30Vdc isolated switch mode power supply option (Option 3008), 5VA typical 95V-265Vac/dc switch mode power supply option (Option 3010), 5VA typical |
| Power Supply | Standard : 95V – 265Vac/dc Isolated supply, 10VA max, powers 4 load cells. |
| Protection | UL94V-0 : Flame retardant ABS plastic housing |
| Regulatory compliance | Complies with EC Directives 89/336/EEC & 73/23/EEC |
| Regulatory compliance | Complies with EC Directives 89/336/EEC & 73/23/EEC |
Analogue
| Accuracy & linearity | 0.05% of full scale, ± 1 display count |
| Digital filter | Low pass with user selectable values |
| Input impedance | 20 MO |
| Memory retention | Full non-volatile operation |
| Sensitivity adjust | 1 mV/V, 2 mV/V, 3 mV/V and 10 mV/V (2 mV/V default) |
| Span drift | 20 ppm / °C typically |
| Warm up time | 20 minutes |
| Zero drift | 0.1µV / °C typically |
Inputs
| Digital input no. 1 | Remote input for tare |
| Digital input no. 2 | (optional) Remote input for peak / valley reset |
Excitation
| 10V | 4 x 350O load cell |
| 10V | 4 x 1000O load cells |
| Load cell connection | 6 wire + shields (sense included) |
Set Point Options
| Adjustable settings: | Hysteresis, on delay, hi/lo, normally open/closed |
| Electro-mechanical relay | Form type: Form C (change-over contact) |
| Electro-mechanical relay | Rating:250Vac, 30Vdc, 2A, power factor 1 |
| Solid-state relay | Form type : Form A (normally open contact) |
| Solid-state relay | Rating : 400Vac/dc, 0.5A, power factor 1 |
Serial Interface Options
| Capabilities – Asciibus protocol | – continuous output approximately 5 x second |
| Capabilities – Asciibus protocol | – output on demand via print button |
| Capabilities – Asciibus protocol | – output on demand via serial request |
| Capabilities – Digibus protocol | Full remote control, except for field setup |
| Isolation to input | Optional, 1500V isolation (order option 3006) |
| Serial interface | RS-232 or RS-485, 2400, 4800, 9600 & 19200 baud |
Analogue Outout Options
| Analogue output accuracy | 0.1% of full scale |
| Analogue output isolation | Optional, 1500V input/output isolation (order option 3006) |
| Analogue output resolution | 12 bits |
| Analogue output temp. coefficient | 20 ppm / °C typically |
| Current analogue output load | 500O maximum (current is source, not sink) |
| Voltage analogue output load | 1kO minimum |
A/D Converter
| A/D conversion rate | Approximately 5 per second |
| A/D Type | 16 bit dual slope |
| Resolution | 40 000 internal counts |
RTD Input Specifications
| Setup and calibration | Full digital with visual prompting in plain messages |
This Product is available in the following options:
- DPM3006 – Isolated outputs (order with 3002/3/13)
- DPM3009 – Parallel BCD output (cannot be ordered with any alarm options, option 3006 or with option 3022)
- DPM3012 – Peak / valley hold
- DPM3014 – Auto zero (with remote zero)
- DPM3025 – Keypad lockout Standard
- DPM3026 – Display hold
- Setpoint – Alarms – DPM3001P, DPM3001M, DPM3004P, DPM3004M, DPM3017M, DPM3017P, DPM3018P, DPM3018M
- Outputs – DPM3002, DPM3013
- Power Supply – DPM3008, DPM3010
- Displays – DPM3020, DPM3022
For more information, click here.