Crystal 2100 Series User Manual download pdf

PRESSURE is Our BUSINESS

PN: 2102

8/01

Page 1 of 8

2100 Operation Manual

Introduction

Crystal Engineering 2100 Series Pressure Gauges

and Calibrators measure almost any type of pneu-

matic or hydraulic pressures and, depending on the

model, up to 500 PSIG. These instruments can also

be used to measure vacuum.

2120s are pressure gauges only, 2121s include a

high accuracy milliamp indicator for simultaneous

display of milliamps and pressure.

A typical application for these instruments is for field

calibration of differential pressure transmitters. The

transmitter being calibrated is isolated from the pipe,

the low side vented to atmosphere and the high

transmitter pressure input is connected to a 2121

and a controllable pressure source (like a hand-

pump). The milliamp signal from the transmitter is

then routed through the 2121 milliamps terminals.

The 2121 indicates the actual transmitter milliamp

output versus true applied pressure. Zero, span and

linearity of the transmitter can be field tested and

calibrated with this system.

All 2100 series instruments use a silicon pressure

sensor with a permanently filled oil isolator. Only the

316 stainless steel diaphragm is exposed to to the

applied media, whether it be gas or fluid. This series

was designed to survive high humidity so the

switches are fully sealed and the circuit boards are

conformally coated.

Gauge pressure models (part numbers ending in -G)

measure the difference between atmospheric

(barometric) pressure, and the pressure (or vacuum)

applied to the pressure port. When the pressure

applied is less than the barometric pressure (i.e.,

vacuum) the gauge will indicate negative pressure.

Absolute models (part numbers ending in -A)

measure the difference between an absolute

reference vacuum and the pressure (or vacuum)

applied to the pressure port. Absolute models will

not indicate negative pressure when vacuum is

applied. The pressure being measured can also be either liquid or gaseous, providing

it is compatible with the materials listed in the specification section.

1 2 3 4 5 6 7 8

Summary of Contents

Page 1 - 2100 Operation Manual

PRESSURE is Our BUSINESSTMPN: 21028/01Page 1 of 82100 Operation ManualIntroductionCrystal Engineering 2100 Series Pressure Gaugesand Calibrators meas

Page 2 - Operating Instructions

PN: 21028/01Page 2 of 8Operating InstructionsTo ensure safe and accurate operation, please be familiar with the following operations andfunctions.WARN

Page 3 - PRESSURE is Our BUSINESS

PRESSURE is Our BUSINESSTMPN: 21028/01Page 3 of 8The power switch must be off when installing the battery, to avoidmomentarily connecting the battery

Page 4 - Specifications

PN: 21028/01Page 4 of 8SpecificationsBattery: 9V alkaline. Eveready #522 or equivalent.Battery life: 2120 - 300 hours, 2121 - 100 hours.Low Battery I

Page 5

PRESSURE is Our BUSINESSTMPN: 21028/01Page 5 of 8Standard Models(*) insert 1 for millameter, 0 for gauge, only. Other ranges available, contact fact

Page 6 - Calibration Procedure

PN: 21028/01Page 6 of 8If you have any questions regarding calibration or repair, please contact us at any of the phonenumbers listed on the back of t

Page 7

PRESSURE is Our BUSINESSTMPN: 21028/01Page 7 of 8Absolute gauges only: Apply full vacuum to the instrument. When the reference vacuumgauge indicate

Page 8

PN: 21028/01Page 8 of 8WarrantyCrystal Engineering Corporation warrants the 2100 to be free from defects in material andworkmanship under normal use a

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Crystal 2100 Series User Manual

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Summary of Contents

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