Tide Recorder – model TD304
 The TD304 is a high precision instrument for recording/monitoring of tide or water level and also temperature. Optional sensors can be added: dissolved oxygen, turbidity and fluorescence. For optional sensors with several sensitivity ranges, the TD304 has auto range capability. The accompanying software, SD200W, contains versatile functions for programming, postand online data processing and presentations: - multigraph, online plotting, density and depth calculations. The program is continuously extended according to customer’s requests. The programmed settings and calibration coefficients are maintained in nonvolatile eeprom, and will not be changed/lost if power is disconnected. Robustness and complete protection from leakage has been obtained by vacuum molding the electronic and all other components in solid polyurethane. On/Off-switching is by a magnetic key or from keyboard. A sealed battery compartment contains two replaceable C-cells. The instrument is equipped with brackets for attachment to mooring fixture. The TD304 is available as absolute or reference types. The reference type is vented through the connector and a cable with internal air pipe. Data are recorded in physical units and simultaneously transmitted via an RS232 I/O watertight connector for on-line use. For remote readout and monitoring, the manufacturer offers several options: Communication Unit CU901, for two-way communication via Iridium satellite,
GPRS with embedded web server, GSM and UHF/VHF.
Designations:
TD304A: absolute type (Tide). TD304R: reference (gauge) type(Water level).
Download data sheet as PDF
Specifications
| Pressure: |
Specify desired depth range with order |
| Ranges(absolute): |
20, 50, 100, 200, 500m |
| Ranges(reference): |
10, 20, 50, 100m |
| Resolution: |
0.0001 dbar (m) |
| Accuracy: |
+/- 0.01% FS (-2 - 40'C) |
| Response time: |
0.1 sec |
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Temperature:
Range: |
-2 to +40°C |
| Resolution: |
0.001°C |
| Accuracy: |
+/- 0.01°C |
| Response time: |
< 0.2 sec |
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| Dissolved oxygen |
(optional): |
| Sensor type: |
SAIV205 |
| Range: |
0 to 20 mg/l |
| Resolution: |
0.01 mg/l |
| Accuracy: |
+/- 0.2 mg/l |
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| Fluorescence |
(optional): |
| Sensor type: |
Fluorscein/Rhodamine/ |
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Chlorophyll/CDOM |
| Range: |
2.5, 7.5, 25, 75 µg/l |
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Selected/autorange |
| Resolution: |
0.03 µg/l |
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| Turbidity: |
(optional) |
| Sensor type: |
Backscatter |
| Range: |
12.5, 62.5, 250, 750 FTU |
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Selectable/autorange |
| Linearity: |
< 2% |
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| Real time clock: |
+/- 2 sec/day |
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| Interval: |
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| Programmable: |
1 sec to 180 min. | |
| Integration time: |
Programmable: 2 - 240sec
(pressure measurement) |
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| Memory: |
CMOS SRAM |
| 65000 data sets of TD | |
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| Data output: |
RS232 ASCII code.1200-9600 baud. |
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1 start, 7 data,1 stop, even parity or |
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1 start, 8 data, 1 stop, no parity |
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selectable via menu |
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| Power: |
2 ea 3.6V lithium C-cells.
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Recommended type: SAFT LSH14 |
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(Sufficient for 1.500.000 data sets) |
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External supply if used:
10 - 30VDC |
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| Material: |
Vacuum molded polyurethane and Titanium
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| Dimensions: |
Length 400 mm. Diameter 60 mm
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Weight: |
In air: 2 kg. In water: 0.8 kg. |
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Packing: |
Suitcase (534x4270x157 mm) |
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Grossweight 5.5 kg |
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| Accessories: |
On/Off magnetic key |
| (included) |
PC communication cable 2,5m, |
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MINISOFT SD200W program, |
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Operating Manual |
| TD304R: |
Cable (15m) with air pipe and |
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on-land connector unit. |
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| Warranty: |
Two years against faulty |
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materials and workmanship | |
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