LASCAR EMT-1900 User Manual

EMT 1900 Single Hole Mounting Thermometer

EMT 1900 isan easy to mount LCD digital panel meter.
external sensor (not supplied). The module uses NTC temperature sensors to ensurehigh accuracy over a wide temperature range.
the user needonly drill a single 5.5mm/ hole inthe panel. The moduleis fitted tothe panelby locating itsscrew threaded stud through thehole, fitting the

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The module canmeasure ambient temperature via a built-in sensor and outside temperature via an

To mount the module,

washer and tightening the nut provided. The module's connecting wirespass through the hollow stud into the target application, where they can beeasily
plugged or solderedinto place.

A rubber sealisincluded, providing splashproof protectionforthe unit when fittedto themeter during installation.

Single Hole Mounting

4 Measurement Ranges

12.5mm / 0.5" LCD Digit Height

Compatible with 10k NTC Sensors

Ω

°C

5-Wire Connection

Splashproof

Shown Actual Size

Stock Number

Easy Mounting Thermometer EMT 1900

Specification Min. Typ. Max. Unit

Seal

THERMOMETER

9.0

(0.35)

Panel

5 Wires - 30cm (12.0)

Nut

Washer

Measurement
ranges °F range +14 +122 °F

Resolution

Resolution +140 to +170°C 2 (4) °C (°F)

Accuracy* °C range 1 °C (±2 count)

Sample rate 3 sample/sec
Operating temperature range -10 +50 °C
Supply voltage** 4 28 V d.c.
Supply current 1 mA

* Using external NTC sensor with 10k @ 25°C and a 25 to 85°C Beta value of 3977, for example:

BC Components 2322-640-73103. The module may require recalibration.
To ensure maximum accuracy, recalibrate periodically. Calibrate the module at top end of

measurement range.

** Do not apply more than 28V, as this may damage the meter.

°C range -10 +50 °C

°C range -20 +220 °C
°F range -4 +428 °F

Internal Sensor

(Internal Sensor)

(Internal Sensor)

(External Sensor)

(External Sensor)

0.5 (1) °C (°F)

-20 to +140°C 1 (2) °C (°F)

External Sensor

+170 to +220°C 5 (10) °C (°F)

(Both Sensors)

°F range 2 °F (±4 count)

(Both Sensors)

Ω

DIMENSIONS All dimensions in mm (inches)

°C

5.00
(0.20)

21.75 (0.85)

10.70
(0.42)

10.70
(0.42)

21.40 (0.84)

43.50 (1.71)

REAR VIEW

CAL EXT

CAL INT

21.75 (0.85)

Module thickness: 5.5mm (0.22")

www.lascarelectronics.com

Underrange display

Overrange display

FITTING THE EMT 1900

Drill a 5.5mm / " hole in the panel.
the panel by passing its screw threaded stud and the wires through the hole, fitting the
washer and tighteningthe nutprovided. Take care not totrap any of the connectingwires.
Do

not overtighten thenut asthis may damage themeter.

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Fit seal to the rear of the module. Fit the module to

LASCAR ELECTRONICS LTD.

MODULE HOUSE, WHITEPARISH,

TEL: [phone] FAX: [phone]

WILTSHIRE SP5 2SJ UK

E-mail: [e-mail]

LASCAR ELECTRONICS INC.

3750 West 26th Street,

TEL: [phone] FAX: [phone]

Erie, PA 16506 USA

E-mail: [e-mail]

LASCAR ELECTRONICS (HK) LIMITED

FLAT C, 5/FL., LUCKY FTY. bldg., 63-65 HUNG TO ROAD

KWUN TONG, KOWLOON, HONG KONG

TEL: [phone] FAX: [phone]

E-mail: [e-mail]

0. BLACK 0V Negative supply voltage to the module.

1. BROWN NTC Connection for external 10k NTC sensor.

Ω

2. RED V+ Positive supply voltage to the module.

3. ORANGE INT/EXT Leave floating to display internal sensor temperature.
Connect to 0V to display external sensor temperature.

4. YELLOW °C/°F Leave floating to select °C measurement range.
Connect to 0V to select °F measurement range.

SAFETY

As the NTC temperature sensor is a passive device, no voltages should be applied to the input terminals of the EMT 1900. The user must ensure that the
incorporation of the meter into the user ’s equipment conforms to the relevant sections of BS EN 61010 (Safety Requirements for Electrical Equipment for
Measuring, Control andLaboratoryUse).

APPLICATIONS

+4 to +28V d.c. +4 to +28V d.c.

RED RED

BLACK BLACK

0V 0V

Displaying ambient temperature in °C,
using the module's internal temperature sensor.

BROWN

NTC

25°C

2 5 −8 5 °

=3977

C

Ω

+0.75%

R =10k

β

NTC
R =10k

25°C

β

=3977

2 5 −8 5 °

C

Ω

RED

BLACK

BROWN

°C°C

+0.75%

Leave S1 open to display internal sensor temperature in °C.
Close S1 to display external Sensor temperature in °C.

+4 to +28V d.c.

YELLOW

°F

ORANGE

S2

S1

0V

ORANGE

S1

Leave S1 open to display internal sensor temperature.
Close S1 to display external Sensor temperature.
Leave S2 open to display temperature in °C.
Close S2 to display temperature in °F.

Specifications liable to change without prior warning EMT 1900 Issue 8 August/2002 M.C. Applies to EMT 1900/2