MODEL 381 pH/ORP

SECTION 1.0

 

DESCRIPTION AND SPECIFICATIONS

1.3ORDERING 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 of either 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)

 

 

 

CODE INSTALLATION

02Submersion

03Flow Through

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

CODE MEASURING ELECTRODE

10General purpose pH

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

12Ruggedized pH Electrode. For abrasive solutions.

13Platinum ORP Electrode.

14Gold ORP Electrode.

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

CODE LIQUID JUNCTION

20Wood/KYNAR Liquid Junction

21Ceramic/KYNAR Liquid Junction

CODE TEMPERATURE COMPENSATION

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

31Automatic T.C., PT-100. For Models 1054/2054 Series, and 2081

32Automatic T.C., NOT REQUIRED (For Models 1023, 1060 and 1181 ORP)

CODE CABLE

40 15 ft. cable for integral sensor preamp

41 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

 

 

 

 

 

 

 

54

Preamp for Models 1054/2054 Series, and 2081

381

pH

00

10

20

30

40

51

EXAMPLE

 

 

 

 

 

 

 

 

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Emerson 381 instruction manual Example