Time Electronics 7040 - Digital Pressure/Current Calibrator
The 7040 is a portable pressure and current calibrator suitable for workshop, laboratory and field use. With the capability to measure process loop current and pressure, devices such as transmitters and converters to be calibrated directly. Basic accuracy is 0.04%. Pressure can be displayed in any of nine popular engineering units; Bar, PSI, KPa, inWg, cmWg, inHg, mmHg, Kg/cm2, and Atm.
Loop current can be displayed in mA, or as a percentage of span (4-20mA). A min/max logging function (pressure or loop current) is provided.
The min or max values can be recalled to the display and if required can be viewed in real time. An additional feature is leak rate display. This allows the actual leakage rate to be observed in real time in the selected 'pressure units' per sec, or per min.
By connecting the 7040 to a PC or laptop via RS232 and using a suitable program (see EasyCal calibration software) the displayed parameters can be read back: Pressure, Loop Current, Max Value, Min Value. By arranging for the program to store these values in a database a full data logging set-up is possible.
The display is 4.5 digit LCD and power is via a 9V PP3 battery. The 7040 is supplied with pneumatic fittings kit and hose, test leads, technical manual, RS232 lead, and carry case.
Optio
For the 7040, input pressure can be generated by the 7090 pneumatic hand pump (-950mbar to 40bar). The 7090 is compact with comfortable handles with grips moulded into the design make it easy to control the instrument whilst pumping up to pressure. Features include protective caging for the vent valve guarding against accidental damage, and dual o-rings on all pistons to ensure zero leakage Accompanying gauges are also available.
With RS232 connection as standard the display readback can be performed using EasyCal calibration software. With comprehensive features EasyCal can simplify and speed up calibration procedures. Easily produce calibration certificates and reports to international quality standards.
- Vacuum to 20bar versions
- 0.04% accuracy
- Loop current calibration
- 9 engineering units
- Min / Max function
- Leak rate function
- RS-232 serial interface
Technical Specifications
Pressure
| Range (bar) | Vac | 0.2 | 2 | 5 | 10 | 20 |
|---|---|---|---|---|---|---|
|
Accuracy (% of fs) |
0.04 (0.025*) |
0.1 |
0.04 (0.025*) |
0.04 (0.025*) |
0.04 (0.025*) |
0.04 (0.025*) |
|
Resolution (bar) |
.0001 |
0.01mb |
.0001 |
.001 |
.001 |
.001 |
* High accuracy available, specify range code + HA on order.
| Vacuum | Available on 2 bar model. Measures vacuum to - 1 bar |
| Filter | Off (4 readings/sec), average of 4 readings, or average of 16 readings |
|
Temperature Stability |
Less than 0.005% per °C |
|
Units |
bar, PSI, kPa, MPa, inWg, cmWg, inHg, mmHg, Kg/cm2, atm |
|
Pressure Connection |
1/8 BSP female in a stainless steel manifold |
|
Sensor |
Piezo-resistive |
|
Over Pressure |
3 x full scale |
|
Wetted Parts |
Stainless steel & silicon (contaminated media version - stainless steel only) |
Loop Current Calibration
|
Ranges |
+/- 200mA, and '% of 4-20mA' |
|
Resolution |
10μA (200mA range), 0.1% (% of 4-20mA range) |
|
Loop Resistance |
Less thanΩ |
|
Accuracy |
0.05% of reading +/- 2 digit, (0.1% for '% of 4-20mA' range) |
|
Protection |
250mA automatic reset Poly-Fuse |
|
Sockets |
4mm industry standard terminal posts |
General Specifications
|
Power |
PP3 battery, life 50 hours continuous use |
|
Displays |
Pressure display: In one of 9 user selectable units |
| Interfaces | RS-232 for readback and re-calibration (software not supplied) |
|
Front panel |
Polycarbonate membrane keypad |
| Case | Structural resin which is weather-proof to IP66 standard |
| Operating Temperature | 0 to 50°C |
| Storage Temperature | -10 to 60°C |
|
Dimensions |
H157 x W90 x D33mm |
|
Weight |
0.29kg |
|
Supplied With |
Carry case, Pneumatic fittings kit and hose, Test lead, Serial link cable |
|
Optional Extras |
Pneumatic hand pump, EasyCal calibration software, and calibration certificates |
| Country of Origin | UK |
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