SNAP-pH/ORP

$354.00 (USA and Canada only)

Availability: In stock
SNAP-pH/ORP Differential Voltage Measurement Input Module

Please call (800) 321-6786 to order.

SNAP-pH/ORP

Production Specification

The SNAP-pH/ORP module provides two isolated channels of high-impedence voltage input, either -1.00 to +1.00 volts 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

lnput 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

 

-20 to 70 °C
-40 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

SNAP PAC System Product Guide

This document lists and describes all Opto 22 SNAP PAC System part numbers, including PAC Project software, SNAP PAC controllers, SNAP PAC brains, and SNAP I/O modules of all kinds. SNAP PAC mounting racks and SNAP power supplies are also listed.

SNAP-pH/ORP Module

The SNAP-pH/ORP module provides two isolated channels of high-impedance voltage input, either -1.00 to +1.00 volts 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 such as holding tanks, swimming pools, and cooling towers.

Declaration of Conformity (LVD, RoHS)

This document is the Manufacturer's Declaration of Conformity for the products listed herein, in accordance with European, international, and/or national standards and regulations.

Case Study: Bureau of Reclamation

The U.S. Bureau of Reclamation constructs dams, power plants, and canals, and delivers water to more than 31 million Americans. The Bureau also operates the Leadville Mine Drainage Tunnel (LMDT), which drains off and treats water from the local mining district so it can be safely discharged into the Arkansas River.

At the LMDT, the Opto 22 SNAP PAC System is used to monitor water levels, remove metals, adjust the water’s pH, reduce water turbidity, and otherwise treat the water before releasing it—cleaner even than everyday drinking water. More than 2500 I/O points are monitored, controlled, and alarmed.

Opto 22 RoHS 2 Statement of Compliance - Restriction of Hazardous Substances

This document is a statement of compliance with the EU Directive 2011/65/EU, Restriction of Hazardous Substances (RoHS 2). This document lists Opto 22 products that comply with the substance restrictions of the RoHS2 directive.

CE Declaration: Low Voltage

This document is the Manufacturer's Declaration for the listed products as mentioned in the attachment - to which this confirmation refers - that they are in accordance with the mentioned European, international and/or national standards and regulations.

No downloads are available for this product.

Video: SNAP PAC System Overview

This overview describes the four integrated components of the SNAP PAC system: software, controllers, brains and I/O. This hardware and software system is designed for industrial control, remote monitoring and data acquisition.

Video: Securing SNAP Module

A quick overview on securing a SNAP Module to a SNAP rack.

Video: Removing a SNAP Module

A quick overview on removing a SNAP module.

Demo: Accuracy vs Resolution

What's the difference between accuracy and resolution in analog I/O specifications? Try your own specs in the calculator.