Instruction manual

Model 5100-99-IT 4-20 mA Transmitter

1. PRODUCT DESCRIPTION

1.1 GENERAL

The Model 5100-99-IT Transmitter is a member of the Information Technology “IT” family of gas sensor

transmitters.

IT transmitters offer a broad array of features, including:

• Integral alphanumeric LED display

• 4-20 mA output

• Modbus

RTU interface

• SMC Sentry interface

• 316 Stainless steel enclosure option

• Auxiliary integral relay option

• Remote display option

• Low maintenance and operation costs

The 5100-99-IT is designed and approved for installation and operation in hazardous locations.

1.2

nt. Options which can be re-configured by the installer or field technician are fully

1.3.1

e 3-1. Figure 3-6 in this manual provides the wiring terminations for connections to the

ntry controller.

alarm values established in

nnections, allowing for a continuous run to the next transmitter.

PRODUCT CONFIGURATION

Various transmitter configuration options are available. Where applicable, these options are factory

configured prior to shipme

described in this manual

1.3 MODES OF OPERATION

SENTRY INTERFACE

IT gas sensor transmitter can be connected to on Sierra Monitor Sentry Model 5000 controllers. When it is

connected to a Sentry system the IT transmitter must have a unique address which can be established by

setting an address between 1 and 8 on the Transmitter Address Switch accessible from the cover plate as

illustrated in Figur

When the transmitter is operated in conjunction with a Sentry controller, the alarms outputs in the

transmitter can both be set to “Sentry”, allowing the Sentry controller to manage alarm acknowledge and

reset rather than the transmitter. The alarm relay outputs are triggered by the

the transmitter and can be independent of the settings in the Sentry controller.

The Sentry configuration allows daisy chain installation using the Sentry multiplex capability, thus reducing

costs by avoiding the requirement for wiring junction boxes. The connector card has two sets of

Registered trademark of Schneider Electric

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