Datalogger Comparison
Do note that this checklist, although fairly comprehensive, does not cover the subtleties of the different types of loggers. We recommend that you contact our team, with a combined experience of over 70 years in the temperature measuring field, to get advice and recommendations, specific to your needs.
This table is quite large, and thus has been split into two.
Table 1: Comparing the T-TEC E, T-TEC F, T-TEC G and T-TEC P data loggers
| Checklist | T-TEC E | T-TEC F | TempTec 816 | T-TEC P |
|---|---|---|---|---|
| Temperature Range |
T1 - 40 + 85 °C |
T1 - 40 + 85 °C T2 -100 + 20 °C T6 +20 + 160 °C (T-TEC 6 model only) |
- 40 to +90 °C | A -200 + 120 °C B -40 + 120 °C H -40 + 300 °C |
| Accuracy |
T1-40 to 0 °C ± 0.3 °C T2-90 to 20 °C ± 0.8 °C Time: Approx. 1 minute per month |
T1-40 to 0 °C ± 0.3 °C T2-90 to 20 °C ± 0.8 °C Time: Approx. 1 minute per month |
-40 to 0 °C ± 0.3 °C Time: Approx. 1 minute per month |
Time: Approx. 1 minute per month |
| Resolution | < 0.1 °C | < 0.1 °C | < 0.1 °C | < 0.1 °C |
| Water Resistancy |
IP68, Dust and water tight, IEC standard 60529 |
IP68, Dust and water tight, IEC standard 60529 | No rating | IP68, Dust and water tight, IEC standard 60529 |
| Length of Run | Determined by sample rate | Determined by sample rate | Determined by sample rate | Determined by sample rate |
| Sample Rate |
Seconds: 1, 2, 5, 10, 30 Minutes: 1, 2, 5, 10, 30 Hours: 1, 2, 6 |
Seconds: 1, 2, 5, 10, 30 Minutes: 1, 2, 5, 10, 30 Hours: 1, 2, 6 |
Seconds: 1, 2, 5, 10, 30 Minutes: 1, 2, 5, 10, 30 Hours: 1, 2, 6 |
Seconds: 1, 2, 5, 10, 30 Minutes: 1, 2, 5, 10, 30 Hours: 1, 2, 6 |
| Memory | 12, 000+ logs | 10, 600 logs per channel 21, 200 logs if only 1 sensor used |
20, 600 logs | 20, 000 to 60,000 logs |
| Display Options |
Type 7 has LCD Type 6 has none |
Type 7 has LCD Type 6 has none |
LCD |
Type 7 has LCD Type 6 has none |
| Output options | Optional Relay, Audible alarms (Type 6), Visual Alarms (Type 7) | Audible allarms (Type 6), Visual Alarms (Type 7) | Two possible outputs, visual alarms, audible alarms, LCD | Audible allarms (Type 6), Visual Alarms (Type 7) |
| Physical Size | 65 × 31 × 106 mm | 65 × 31 × 106 mm |
118mm × 88mm × 60mm (L × D × H) |
65 × 31 × 106 mm |
| Number of inputs | 1 | 2 | 1 | 1 |
| Starting method |
Immediate Delay |
Immediate Delay |
Immediate Delay |
Immediate Delay |
| Reading Method | Connection to computer via USB or serial port | Connection to computer via USB or serial port | Connection to computer via USB or serial port | Connection to computer via USB or serial port |
| Construction | Polycarbonate (food grade, impact resistant) | Polycarbonate (food grade, impact resistant) | Polycarbonate (food grade, impact resistant)/ABS | Polycarbonate (food grade, impact resistant) |
Table 2: Comparing the T-TEC A, T-TEC C and thermochron data loggers
| Checklist | T-TEC A | T-TEC C | iButton |
|---|---|---|---|
| Temperature Range | 4-20mA input |
- 40 + 85 °C 0-100% RH |
DS1921G F52 DS1921H F5 DS1921Z F5 DS1922E DS1922L DS1922T DS1923 |
| Accuracy |
Better than 1% of full scale Time: Approx. 1 minute per month |
-40 to 0 °C ± 0.3 °C 0-100 % ± 2% RH, Compensated for -5 + 60 °C ambient temperature Time: Approx. 1 minute per month |
±1 °C from -20 + 70 °C, at time of calibration at factory. Time: Maximum 8 minutes per month over full temperature range. DS1922E: ±1.5 °C from +110 °C to +140, ±7 °C typical from +15 °C to +110 °C DS1923: 5% RH |
| Resolution | 10 µA |
Better than 0.1 °C Better than 0.1%RH |
DS1921L F52: ±0.5 °C DS1922E/L/T: ±0.5 °C or ±0.0625 °C (low/high res.)
DS1923: ±0.5 °C, 0.64%RH or ±0.0625 °C , 0.04%RH (low/high res.) |
| Water Resistancy | IP68, Dust and water tight, IEC standard 60529 | Splash proof from top. In order to measure humidity, water vapor does need to reach the sensor. | IP65 (Water resistant only) |
| Length of Run | Determined by sample rate | Determined by sample rate | Determined by sample rate |
| Sample Rate |
Seconds: 1, 2, 5, 10, 30 Minutes: 1, 2, 5, 10, 30 Hours: 1, 2, 6 |
Seconds: 1, 2, 5, 10, 30 Minutes: 1, 2, 5, 10, 30 Hours: 1, 2, 6 |
Minutes: 1, 2, 5, 10, 15, 30 Hours: 1, 2 |
| Memory | 20, 000 to 60,000 logs | 10,600 sets each sensor |
DS1921: 2, 048 logs |
| Display Options |
Type 7 has LCD Type 6 has none |
Type 7 has LCD Type 6 has none |
None |
| Output Options |
Type 6: audible alarms Type 7: visual alarms, LCD |
Type 6: audible alarms
Type 7: visual alarms, LCD |
None |
| Physical Size | 65 × 31 × 106 mm | 65 × 31 × 106 mm |
17.35mm × 5.9 (Diameter × Height) |
| Number of inputs | 1 | 1 Temperature, 1 humidity | 1 |
| Starting Method |
Immediate Delay |
Immediate Delay |
Immediate
Delay |
| Reading Method | Connection to computer via USB or serial port | Connection to computer via USB or serial port | Connection to computer via USB port |
| Construction | Polycarbonate (food grade, impact resistant) | Polycarbonate (food grade, impact resistant) | Stainless Steel, Polypropylene seal |
Notes
Construction
Polycarbonate is stable in water, alcohol, oil, salts and weak acids but adequate care should be taken as it can become cloudy, swell or dissolve in alkali, armoatic hydrocarbons, halogenated hydrocarbons, etc. Printing on the casing may be damaged by alcohol.
Polycarbonate is long time temperature stable up to 115 °C. It is highly weather resistant and may be left outdoors for prolonged time with little effect on properties.
The sanitary properties are good and meet the sanitary standards of FDA (USA) and is acceptaed for contact with food by the Japanese health authorities.
The casing's resistance to some chemicals is reduced at elevated temperatures (>60 °C) . Please enquire if in doubt.
Cleaning: Either soap and water. Alcohol can be used with care but may damaged printing on the casing. IP68 loggers can be placed into a dishwasher.
Accuracy
The accuracy listed is for both the sensor and unit combined, not the unit singly.