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OPT-SNAP-ph-ORP
| SNAP-ph-ORP SNAP-pH/ORP Differential Voltage Measurement Input Module |
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or -0.50 to +0.50 volts. The module is ideal for differential voltage measurements and is used with pH or oxidation
reduction potential (ORP) probes for monitoring bodies of water.
The SNAP-pH/ORP module can be used with SNAP PAC brains and R-series controllers, legacy SNAP Ethernet-based
brains, and legacy serial B3000 and B3000-B brains.
| Input Range |
-1.00 V to +1.00 V for ORP probes
-0.50 V to +0.50 V for pH probes |
| Resolution |
40 µV when configured -1.00 V to +1.00 V
20 µV when configured -0.50 V to +0.50 V |
| Data Freshness (Maximum) |
126 ms (63 ms per channel) when configured -1.00 V to +1.00 V
251 ms (125.5 ms per channel) when configured -0.50 V to +0.50 V |
| Input Filtering | -3 dB @ 2.4 Hz |
| DC Common Mode Rejection | >-120 dB |
| AC Common Mode Rejection | >-120 dB at 60 Hz |
| Maximum Survivable Input | ±100 VDC or peak AC |
| Maximum Operating Common
Mode Voltage |
250 VDC or peak AC |
| Accuracy (% full scale) |
0.05% when configured -1.00 V to +1.00 V
0.05% when configured -0.50 V to +0.50 V |
| Gain Temperature Coefficient | 30 PPM/°C |
| Offset Temperature Coefficient | 15 PPM/°C |
| Power Requirements | 5 VDC (±0.15) at 170 mA |
| Input Resistance (Differential) | >10 Tera Ohms (each channel) |
| Ambient Temperature:
Operating Storage |
0 to 70 °C -25 to 85 °C |
| Torque, hold-down screws | 4 in-lb (0.45 N-m) |
| Torque, connector screws | 5.26 in-lb (0.6 N-m) |
| Agency Approvals | CE, RoHS, DFARS |
| Warranty | Lifetime |
Rev: 04/13
