User Guide

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Instruction Manual

These Instruments are in

Compliance with the CE Directives

HI 148 Series

Thermometers

PRELIMINARY EXAMINATION

GENERAL DESCRIPTION

HI 148 is an indicator for the monitoring of food temperature

in different production cycles.

Constructed in a compact casing and with a molded eye, HI

148 can be installed on the QC bench or wherever necessary to

control the ambient temperature of food chain, from the

storage room to the point of delivery.

The housing has been completely sealed against vapors and

humidity.

The measurement range is from -20 to 60ºC (-4 to 140ºF) with

an excellent ±0.5ºC (±0.9ºF) accuracy. The stainless steel

encapsulated sensor is positioned right on the outer body of this

thermometer to provide a rapid response.

In order to ensure that temperature control is never inter-

rupted, HI 148 runs permanently on a 12VDC power supply.

Temperature is constantly displayed on a large LCD so that the

operator can check it at any time.

HI 148 also offers a unique alarm control. Any value from 0 to

50.0ºC or 32 to 122ºF can be adjusted as the setpoint through

a trimmer located on the back of the meter. Should the

temperature exceed this user-selectable setpoint, the red LED

blinks to warn of an abnormality. The built-in LED is well visible

from a distance.

This alarm is a cost-saving feature with a tremendous poten-

tial. It can be used as a forewarning that the refrigeration or

air conditioning unit is malfunctioning, or that a door has

been left open, or point to any other mishaps, common in a

busy workplace.

HI 148 is a convenient and very inexpensive way to ensure

that temperature of the environment in which food is pre-

pared, kept and served never varies too much from the limits

imposed by the HACCP regulations. In fact , the meter frees

workers from having to manually check the temperature and

immediately signals if and when an abnormality arises.

Celsius and Fahrenheit models are available.

SPECIFICATIONS

OPERATIONAL GUIDE

TAKING MEASUREMENTS

• Turn the meter on by connecting the 12 VDC power

adapter to the meter and to the mains.

• A value will appear on the LCD, to indicate the tem-

perature. Wait a few minutes for the display to stabilize.

ADJUSTING THE SETPOINT

With HI 148 you can select your own setpoint and be alerted

with a visual LED alarm when an abnormal situation arises.

• Unscrew and remove the rear panel and gasket seal to ac-

cess the MEASURE/SET switch.

FUNCTIONAL DESCRIPTION

1. Molded eye

2. Alarm LED

3. Liquid Cristal Display

4. Sensor

5. Power supply connector

6. 12VDC power adapter (included)

Dear Customer,

Thank you for choosing a Hanna product. This manual will

provide you with the necessary information for correct opera-

tion. Please read it carefully before using the meter. If you

need additional technical information, do not hesitate to e-

mail us at tech@hannainst.com.

These instruments are in compliance with the CE directives.

Remove the instrument from the packing material and exam-

ine it carefully. If any damage has occurred during shipment,

immediately notify your Dealer or the nearest Hanna Customer

Service Center.

The meters are supplied with 12 VDC power adapter.

Note: Conserve all packing material until the instrument has

been observed to function correctly because any defective

item must be returned to the Dealer in its original

packing.

HI 148-00

Range -20.0 to 60.0ºC

Resolution 0.1ºC

Accuracy ±0.5ºC

Setpoint Selectable from 0.0 to 50.0ºC

Hysteresis ±0.5ºC around setpoint

Alarm LED blinks when measured temperature is

higher than the setpoint

Sensor Incorporated, encapsulated stainless steel

Environment -20 to 60ºC; RH 100%

Power supply External 12 VDC (included)

Dimensions 86 x 94 x 33 mm (3.3 x 3.7 x 1.3”)

Weight 150 g (5.2 oz.)

HI 148-01

Range -4.0 to 140.0ºF

Resolution 0.1ºF

Accuracy ±0.9ºF

Setpoint Selectable from 32.0 to 122.0ºF

Hysteresis ±1ºF around setpoint