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The PHR-212 Series of pH recorders and controllers provides a reliable method of monitoring, controlling and recording pH levels of various industrial and chemical processes. Featuring an extensive list of standard features, the PHR-212 series includes a digital display, digital switches for alarms setpoints, remote mount pH 4 to 20 mA transmitter, 6 amp solid state relays, front panel adjustable dead band pots and NEMA 4X enclosure. The controllers standard features include a digital display capable of displaying pH readings between 2 and 12 pH, adjustable dual alarm setpoints, dead band adjustments from 1 to 50% of setpoint, programmable time safety delay which activates when pH correction time is excessive and a stand by switch that disables the controller functions during calibration. The recorder utilizes inkless pressure sensitive recording paper for 30 days of recording and front panel mounted calibration adjustments. PHR-212 pH recorder includes a digital display, enclosed in a NEMA 4X enclosure and accepts pH electrodes directly. Supplied with one 30-day roll of recorder paper. PHC-212 is a basic pH controller, it includes a NEMA 4X enclosure, digital display, two setpoints for high and low alarm, adjustable dead band, two 6 amp SSR. Accepts one pH electrode input through supplied pH transmitter. PRC-212 pH recorder and pH controller combines the features of the PHR-212 and PHC-212 into one compact unit. It accepts one electrode through the transmitter that drives the recorder, controller and digital display. Supplied with the PRC-212 is one 30-day roll of recorder paper. PRCD-212 pH recorder/controller uses two independent pH probes in a wall mounted NEMA 4X enclosure. Each pH electrode performs a separate function. The electrode input from the supplied pH transmitter drives the digital display and controller the second pH electrode drives the recorder directly. The recorder electrode may be placed downstream from the control point to record the adjusted values. Supplied with the PRCD-212 is one 30-day roll of recorder paper.
The battery-powered BPR-212 pH recorder (not shown) is perfect for use in hostile environments and remote locations, the battery powered recorder is enclosed in a NEMA 4X enclosure. It uses a 6V rechargeable battery that may be left unattended for approximately 2 weeks. The BPR-212 accepts any pH electrode directly. Supplied with the BPR-212 is one 30-day roll of recorder paper. The BPR is available with range of 2-12 or 0-14. 
pH Recorder Display: None Range: 2 to 12* Resolution: 0.2 pH/lateral chart deviation Accuracy: ▒0.2 pH Repeatability: ▒0.2 pH Temperature Compensation: Manual supplied with 1093 ohm resistor; Automatic 1000 ohm platinum RTD Power Requirements: 120 Vac 50/60 Hz pH Controller Display: 12.7 mm (0.5"), 3 1/2 digit LCD Range: 2 to 12 pH* Resolution: 0.01 pH Accuracy: ▒0.02 pH Repeatability: ▒0.02 pH Temperature Compensation: Manual supplied with 1093 ohm resistor; Automatic 1000 ohm platinum RTD Power Requirements: 120 Vac 50/60 Hz (230 Vac Optional) Contact: Two, 6 amp SSR, requires 200 mA minimum load Dead Band Adjustment: 0 to 50 % of setpoint Safety Time Delay: Adjustable, 1 to 11 minutes Time Delay Relay: 6 amp SPDT Temperature: K-79-7 six in. stem pocket thermometer range -10 to 110ºC Optional ORP Controller Display: 12.7 mm (0.5"), 3 1/2 digit LCD Range: 0 to 1000 mV Resolution: 1 mV Accuracy: ▒1 mV Repeatability: ▒1 mV Power Requirements: 120 Vac 50/60 Hz Contact: Two, 6 amp SSR, requires 200 mA minimum load Dead Band Adjustment: 0 to 50 % of setpoint Safety Time Delay: Adjustable, 1 to 11 minutes Time Delay Relay: 6 amp SPST *0 to 14 pH available, consult Sales To Order (Specify Model No.) Prices shown in U.S. Dollars
Each unit is supplied with NEMA 4X enclosure, appropriate number of pH transmitter(s), K-79 pocket thermometer, models that include a pH recorder also supplied with one roll of 30-day chart paper, and complete operatorÆs manual. To order 230 Vac power input, suffix part number ô-230VACö to part number and add $50. to the price. Ordering Example: PRCD-212, dual input pH controller/recorder, $1955. OPTIONAL RANGES
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6 Models to Choose
