Emerson Process Management 381 3

31.3 ORDERING INFORMATION Model pH/ORP Sensor is housed in a PES body suitable for insertion, submer-sion or flow through installation. The sensor includes an integral preamplifier, measuring electrode, double junc-tion gel-filled reference cell, automatic temperature compensation for pH, and a choice of two cable lengths ofeither 15 ft. or 50 ft. (4.5 or 15.2 m).

MODEL 381 INSERTION, SUBMERSION, FLOW THROUGH SENSOR

CODE FUNCTION

pH Requires Code 30

ORP Requires Code 32 (not for use with 1054/1054A ORP Series)

pHE Requires Code 31 (for use with 1054/1054A/2054 Series and 2081)

381 pH 00 10 20 30 40 51 EXAMPLE

MODEL 381 pH/ORP SECTION 1.0

DESCRIPTION AND SPECIFICATIONS

CODE MEASURING ELECTRODE

10 General purpose pH

11 High pH Electrode, requires Code 21. For sodium concentrations greater than 1% or

continuous measurement above 11 pH.

12 Ruggedized pH Electrode. For abrasive solutions.

13 Platinum ORP Electrode.

14 Gold ORP Electrode.

15 HF pH Electrode. For HF concentrations less than 100 ppm.

CODE LIQUID JUNCTION

20 Wood/KYNAR Liquid Junction

21 Ceramic/KYNAR Liquid Junction

CODE CABLE

40 15 ft. cable for integral sensor preamp

15 ft. coax cable w/BNC connector for remote sensor preamp

and integral analyzer preamp (1054A-54/2054-54 only)

42 15 ft. coax cable w/o BNC connector for integral analyzer

preamp (1054, 1181-43/44 & 2081-05 only)

43 50 ft. cable for integral sensor preamp

CODE INTEGRAL PREAMPLIFIER

50 Preamp for Models 1181 pH/ORP & 1050/1060

51 Preamp for Models 1003/1023

52 Preamp NOT REQUIRED

Preamp for Models 1054/2054 Series, and 2081

CODE TEMPERATURE COMPENSATION

30 Automatic T.C., 3.0K ohm. For Models 1003, 1050 & 1181 pH

Automatic T.C., PT-100. For Models 1054/2054 Series, and 2081

Automatic T.C., NOT REQUIRED (For Models 1023, 1060 and 1181 ORP)

CODE INSTALLATION

02 Submersion

03 Flow Through

04 Flow Through with Flow Powered Cleaner (not available with ORP)