DATEL DMS-EB-HTB Datasheet

®®

DMS-EB-HTB

High-Accuracy

Temperature Sensor Boards

Order online at www.datel.com

Features

• 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

Actual Size

Description: The DMS-EB-HTB Application Boards accept inputs from user­supplied, 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 "fi ne tuning"
the AD590 output to precisely match the selected meter. A 6-wire, screw-type

DMS-30PC/LCD-0 Meters

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

R6

R3

R5

R2

U1

PROBE

CAL.

TB1

R1

R4

REF.
CAL

1

Functional Specifi cations (TA = 25°C, VCC = +5V)

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

112

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.

R6

(–) INPUT LO

(+) INPUT HI

REF. OUT

REF. IN

12

REF.
CAL.

R3

R4
2k

R5

11

10

PROBE

CAL.

9

8

7

R1
200

R2

3.9k

+

U1

1.23V
REF.

–

TB1

1

+5V SUPPLY

2

3

5V RETURN

4

DP 3

5

6

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 x

Temperature Probe

(user supplied)

12 5 6

+5V

+

–

AD590

SUPPLY5VRETURN

HTBF HTBC
R2 1.74k 953
R3 6.65k 8.66k
R5 4.53k 2.74k

0.83"(21.08mm)W

Ordering Information

Figure 1. DMS-EB-HTB Schematic Diagram

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

DS-0399B 03/01

DA TEL, Inc., Mansfi eld, MA 02048 (USA) • Tel: [phone] Fax: [phone] • Email: [e-mail] • 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. Specifi cations are subject to change without notice. The DATEL logo is a registered DATEL, Inc. trademark.