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ມີຢູ່ໃນສາງProduct information “HI721 Checker HC ® – Iron”
The HANNA HI 721 Checker®HC bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits are not very accurate and only give 5 to 10 points resolution while professional instrumentation can cost hundreds of dollars and can be time consuming to calibrate and maintain. The HANNA HI 721 Checker®HC is accurate and affordable with immediate results.
The new HI 721 Checker®HC portable handheld colorimeter features a resolution of 0.01 ppm (500 points) and ±0.04 ppm ±2% of reading accuracy. The HI 721 Checker®HC uses an adaptation of Standard Method 315 B.
The contoured style of this Checker®HC fits in your palm and pocket perfectly and the large LCD is easy to read. The auto shut-off feature assures the battery life will not be drained if you forget to turn it off.
The HI 721 Checker®HC is extremely simple to use. First, zero the instrument with your water sample. Next, add the reagent. Last, place the vial into the HI 721 Checker®HC, press the button and read the results. It’s that easy.
Product Type: Incubator
Product Type: Test Kit
Brand: Tintometer
Product Line: Lovibond
Class: CHECKIT Comparator Test Kit
Grade: Chlorine (DPD)
Range: 0 – 4 mg/l Cl2
Increments: 0, 0.2, 0.4, 0.6, 0.8, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0, 2.5, 3.0, 3.5, 4.0
Accuracy: ±5% (Full Scale)
Includes: CHECKIT® Comparator in a sturdy plastic case, CHECKIT® Disc(s), 3 cells & 1 stirring rod, reagents, warranty information, instruction manual
| Display | Graphic Display | ||
| Interfaces | Infra red interface for test data transfer (via IRiM) RJ45 socket for internal updates |
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| Optics | LEDs, Interference Filters (IF) and photo sensor in transparent sample chamber. Wavelength specifications of interference filters: 430 nm Δ λ = 5 nm 530 nm Δ λ = 5 nm 560 nm Δ λ = 5 nm 580 nm Δ λ = 5 nm 610 nm Δ λ = 6 nm 660 nm Δ λ = 5 nm |
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| Wavelength Accuracy | ± 1nm | ||
| Photometric Accuracy | 2% full scale (at 20 ° C to 25 ° C) | ||
| Photometric Resolution | 0.005 A | ||
| Operation | Acid and solvent resistant touch sensitive keypad; audible feedback via integrated beeper | ||
| Power Supply | 4 x AA batteries; operating time 26 hours continuous or 3500 tests | ||
| Auto Off | approx 20 minutes after last keypress with audible signal | ||
| Dimensions | Unit 210 x 95 x 45 mm Carry case 395 x 295 x 106 mm |
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| Unit Weight | 450g | ||
| Ambient Conditions | 5-40 ° C, 30-90% rel humidity (non condensing) | ||
| Memory Capacity | 1000 data sets with time, date, sample ID | ||
| Conformity | CE |
