| Products | Home |
The Model HH41 handheld thermistor thermometer is a rugged, field tested unit that fits a wide variety of temperature measurement applications requiring ultra-high accuracy and high resolution at an economical price. The HH41 accepts OMEGA's 400 Series thermistor probes with phone jack termination. The HH41 features display hold and °F/°C selection from the single front panel tactile feedback silicone function button. The unit's LCD display features a low battery indication and also rate of temperature change arrows which, flashing at different speeds, inform the operator of the rate at which the temperature is changing. The unit has internal jumpers to disable selection of °F or °C from the front panel and enable display of either °F or °C only. Internal jumpers are also present to select either auto or manual shutoff mode.
In the auto shutoff mode, the unit will automatically shut off in 10 minutes with no function key entry. Model HH42 has all the features of the HH41 with the addition of RS-232 communications. In situations where very high system accuracy is required, OMEGA offers a total system calibration service (probe plus meter).
Specifications:
Acccuracy: See Instrument Accuracy vs. Temperature Table below
Resolution: see Resolution Table below
Repeatability: 0.002 to 0.01°C
(-20 to 70°C); 0.004 to 0.02°F
(-4 to 158°F) typical for one week at constant ambient temperature
Temperature Range: -20 to 130°C (-4 to 266°F)
Reading Rate: 2 per second
Display: 4 1/2 digit LCD
Power: 9 Vdc battery, aklaline (included), optional 110Vac adaptor
Battery Life: 20 hr, typical, alkaline battery
Battery Indicator: Displays flashing battery indicator when less than 10% of battery life remains
Temperature Unit Selection: °F/°C selectable from front panel function button, or internal jumpers to enable °F or °C only
Shutoff Mode: Internal jumper selection for auto or manual shutoff mode; auto shutoff in 10 min with no function key entry
Thermistor Sensor: Works with OMEGA® 400 Series thermistor probes with 1/4" phone jack
(Model PPM-2) connection
Operating Ambient: 10 to 40°C (50 to 104°F); 0 to 85% RH
RS-232 Communications: 9600 baud, no parity
Case Material: ABS
Dimensions: 184.1 x 83.8 x 31.8 mm (7.25"H x 3.30"W x 1.25"D)
Weight: 312 g (11 oz)
Instrument Accuracy* vs Temperature
| Temp °C (°F) | Accuracy °C (°F) |
| -20 (-4) | 0.016 (0.029) |
| -10 (14) | 0.015 (0.027) |
| 0 (32) | 0.015 (0.027) |
| 10 (50) | 0.015 (0.027) |
| 20 (68) | 0.015 (0.027) |
| 30 (86) | 0.015 (0.027) |
| 40 (104) | 0.017 (0.031) |
| 50 (122) | 0.019 (0.034) |
| 60 (140) | 0.023 (0.041) |
| 70 (158) | 0.029 (0.052) |
| 80 (176) | 0.037 (0.067) |
| 90 (194) | 0.049 (0.088) |
| 100 (212) | 0.066 (0.119) |
| 110 (230) | 0.088 (0.158) |
| 120 (248) | 0.117 (0.211) |
| 130 (266) | 0.156 (0.281) |
*Ambient temperature: 18 to 28°C (64 to 82°)
Display Resolution:
| Temp Range | Resolution |
| °C (°F) | °C (°F) |
| -20 to 102 (-4 to 215) | 0.01 (0.01) |
| 102 to 130 (215 to 266) | 0.02 (0.05) |
| To Order (Specify Model Number) | |||||
| Model Number | Price | Description | |||
| HH41 | $390 | Handheld thermistor thermometer | |||
| HH42 | 445 | Handheld thermistor thermometer with RS-232 communications | |||
Each unit is supplied complete with 9 Vdc alkaline battery, NIST traceable calibrations certificate and complete operator's manual
Ordering Example: HH41 thermometer plus HH40-AC 110 Vac adaptor $390 + $45 = $430.
Accessories
| Model Number | Price | Description | |
| HH40-AC | $45 | 110 Vac adaptor for HH41 or HH42 | |
| HH40-SOFT | 99 | Software for HH42 | |
| SC57 | 9 | Soft case for HH41 or HH42 | |
| RCC-1000 | 20 | Rigid attache style case for HH41 or HH42 plus probes | |
| MN1604 | 3 | Extra alkaline battery | |
|
| |||||
