Panel Indicators & Controllers

3½ Digit Temperature Indicators & On-Off Controllers 151/157 Series

Used for common panel indication and alarm/on-off control purposes, these accept inputs from temperature sensors (RTDs & Thermocouples) or process transmitters with the common following ranges:

Common Specifications

• 110/240V AC Supply, 24V DC option

• 24V DC output for process indicators

• PV Retransmission 4-20mA OP option

• Zero/span pots for calibration, hysterisis

• ABS/Ext. aluminium enclosures option

Model 151 3½ Digit Indicators

• 92x46 mm cutout, 92mm² Optional

• Built-in 12 way selector switch option

• 4½ Digit versions (ask for 152)

Model 157 3½ Dgt. On-Off Controllers

• 92mm² cutouts standard

• Choice of 1 or 2 set points/relays

• Differential Controller (A-B) option

• Cascade (remote) set point option

• Time Proportional (TP) action option

• 4 set point/relays for ACR Ask for 167

• 4½ Digit Versions (ask for 158)

157-DT Differential On-Off Controller

Indicates A, B, A-B and controls (A-B)

Universal Indicators & On-Off Controllers

LTRon Indicators/Controllers are similar to 151/157 Series but are Universal type, i.e. any input (RTD, Thermocouple or 4-20mA, 1-5V DC) can be site selected. No maintaining different input stocks means low inventories!

• 110/240V AC mains supply

• 24V DC output to power transmitter

• PV Re-Tx isolated 4-20mA O/p option

• Calibration etc. by soft keys

LTRON-40 Indicator/Controller

• 99x96x110 mm size, 92 mm² cutout

• Up to 4 se points/CO relays, 7A

• RS-485 isolated port for DAS option

LTRON-48 Indicator/controllers

• 96x48x110 mm size, 92x46 cutout

• Up to 2 set points/CO relays

• Other features same as LTRON-40

Universal Flow Totalizers/Natchers

LTRON-BT Flow Totalizer/Batcher

• Inputs 0/4-20mA, 0/1-5V DC etc.

• 7-segment LEDs, 4-digit display for Flow, 8-digit for totalized flow.

• 2 relays each for batch control & flow control options

Digital Bargraph Indicators

LTRON-V Digital Bargraph
Indicators are Digital + LED Bargraph Indicators User can get an overall trend from the bargraph as well as exact PV/alarm info from the Digital display.

Other innovative features are:

• Universal inputs keyboard selectable

• 2 alarms/relays option

• RTD/J,K,R,S thermocouples & 4-20 mA linear/square root inputs

• PV Retransmission isolated 4-20mA output option

LTRON-2B Dual Loop Bargraph Indicators

• 72x144x125 mm (WHD) low depth!

• Features as per LTRON-V but two channels, independent for any input

• 2 alarm/relays per channel

Flameproof Indicators, Scanners & Panel Instruments

Flameproof enclosures are required for instruments installed in hazardous areas (petrochemicals, pharma, oil/gas). Most instruments have option of CMRI approval for Groups IIA & IIB as follows:

• Indicators & On-Off controllers

• Temp./Process Scanners/Loggers

• Flow Totalizers/Batchers

• Temperature Transmitters

• Other instruments ask for this option