DATEL, Inc., Mansfield, MA 02048 (USA)

• Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 • Email: sales@datel.com • Internet: www.datel.com

DATEL makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein

do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. The DATEL logo is a registered DATEL, Inc. trademark.

®®

DMS-EB-HTB

High-Accuracy

Temperature Sensor Boards

DMS-30PC/LCD-0 Meters

Features

DS-0399B

03/01

Actual Size

• Accepts inputs from user-supplied

solid-state temperature sensors

• Available in °C or °F output readings

• 6-wire screw-type terminal block

• Measures temperatures from

–55 to +150°C (–67 to +199.9°F)

• Use with DMS-30PC/LCD-0 meters

Ordering Information

DMS-EB-HTBC

High-accuracy temperature

probe board, Celsius

DMS-EB-HTBF

High-accuracy temperature

probe board, Fahrenheit

DMS-BZL1

Bezel assembly

DMS-BZL2

Bezel assembly with sealing gasket

Order online at www.datel.com

Description: The DMS-EB-HTB Application Boards accept inputs from user-

supplied, AD590 solid-state temperature sensors. The boards can be used with

any of DATEL's ±200mV, 5V-powered DMS-30PC/LCD-0 Series, 3½ Digit, LED/

LCD Display, Digital Panel Voltmeters — although better performance can be

achieved with either LCD or low-power LED models. This meter/board combination

provides extremely accurate (±0.3°C) temperature measurements over the range

of –55 to +150°C(with DMS-EB-HTBC) or –67 to +199.9°F (DMS-EB-HTBF).

Individual reference-adjust and probe-adjust potentiometers allow for "fine tuning"

the AD590 output to precisely match the selected meter. A 6-wire, screw-type

terminal block provides for quick, reliable, signal and power connections.

Calibration: R4 (Reference Adjust) is factory-calibrated to +459.8mV for °F

and +273.2mV for °C (do not readjust). This measurement is taken between TB1

(pin 6) and pin 12 of the DMS-30PC/LCD-0. R1 (Probe Adjust) requires customer

adjustment since every sensor has a slightly different zero offset. Calibration is

simple: connect the sensor leads to TB1 and adjust R1 until the DMS-30's display

matches a selected reference temperature indicator.

Figure 1. DMS-EB-HTB Schematic Diagram

Measurement Range:

DMS-EB-HTBC

–55 to +150°C

DMS-EB-HTBF

–67 to +199.9°F

Sensor Type

AD590 active linear device

Accuracy:

Typical

±0.3°C (or °F)

Maximum

±1.0°C (or °F)

Operating Voltage Range

+5V (±10%)

Input Current (Board only):

Typical

+0.8mA

Maximum

+1.0mA

Sensor Lead Length

3 feet, maximum

Operating Temperature Range

0 to +60°C

Storage Temperature Range

–20 to +75°C

Humidity (non-condensing)

0 to 95%,

Dimensions

2.02" (51.31mm)L

0.83"(21.08mm)W

R4

R1

1

12

TB1

1

R2

R6

R5

R3

PROBE

CAL.

REF.

CAL

U1

(–) INPUT LO

(+) INPUT HI

REF. OUT

REF. IN

12

11

8

7

10

9

TB1

AD590

Temperature Probe

(user supplied)

R1

200

DP 3

+5V SUPPLY

3

4

5

6

2

1

5V RETURN

HTBF

HTBC

R2

1.74k

953

R3

6.65k

8.66k

R5

4.53k

2.74k

PROBE

CAL.

R2

REF.

CAL.

R3

R5

R4

2k

R6

3.9k

U1

1.23V

REF.

12

5

6

+

–

+

–

+5V

SUPPLY

5V

RETURN