- sx751 portable ph/orp/conductivity/do meter
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the perfect combination of advanced electronical technology, electrode technology and software design. measurement of parameters with high precision such as ph, orp, conductivity, tds, salinity, resistivity, dissolved oxygen and temperature of water solution. the most cost effective portable water analytical instrument.
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● built-in microprocessor chips, intelligent functions such as automatic calibration, automatic temperature compensation, data storage, function set-up, self-diagnose information, automatic power-off and low voltage display. |
| ●multi-parameter meter, equipped with ph electrode, orp electrode, conductivity electrode and dissolved oxygen electrode, automatic identification of electrode by meter. |
| ●automatic identification of 13 ph standard calibration solutions, three options of standard buffer solutions: europe and america series, nist series and china series. |
| ● able to set ph measurement modes of high purity water and pure water with ammonia. |
| ● automatic identification of 8 conductivity standard calibration solutions, two options of standard calibration solutions: europe and america series and china series. |
| ● adopt advanced conductivity measurement technology, use conductivity electrode of constant k=1, only need one point calibration and meet the measurement precision requirement of 0.5μs/cm ~ 200 ms/cm. |
| ● ability to switch among conductivity, tds, salinity and resistivity. multinomial calculation for tds and salinity to ensure the conversion precision of the full scale. |
| ●conductivity measurement mode has the function of non-linear temperature compensation for high purity water. |
| ●measurement mode of dissolved oxygen has the function of automatic temperature compensation, automatic salinity compensation and manual air pressure compensation. |
| ●new polarographic type dissolved oxygen electrode can measure temperature, salinity and dissolved oxygen simultaneously, equipped with special dissolved oxygen electode calibration set, polarization only for 3~5 min. |
| ● meter meets ip57 waterproof rating, equipped with calibration solution and portable case. |
| category | product name | basic features and specifications |
| ph |
measuring range |
（-2.00 ~ 19.99）ph |
|
resolution |
0.1/0.01 ph | |
|
accuracy |
meter:±0.01ph; overall: ±0.02ph | |
|
input current |
≤2×10-12 a | |
|
input impendance |
≥1×1012 ω | |
|
stability |
±0.01 ph/3h | |
| temp. compensation range | （0 ~ 100）℃(automatic) | |
| orp |
measuring range (mv/orp/eh) |
-1999mv ~ 0 ~ 1999mv |
|
resolution |
1mv | |
|
accuracy |
meter:±0.1% fs, overall: ±15mv | |
| conductivity | measuring range | conductivity：（0.00~19.99）μs/cm （20.0~199.9）μs/cm （200~1999）μs/cm （2.00~19.99）ms/cm （20.0~199.9）ms/cm tds: （0 ~ 100）g/l salinity： （0 ~ 100）ppt resistivity：（0 ~ 100）mω·cm |
|
resolution |
0.01/0.1/1μs/cm 0.01/0.1 ms/cm | |
| accuracy | meter:±1.0% fs, overall:±1.5% fs | |
|
temp. compensation range |
（0 ~ 50）℃(manual) | |
|
electrode constant |
0.1 / 1 / 10 cm-1 | |
|
benchmark temperature |
25℃、20℃ and 18℃ | |
| dissolved oxygen |
measuring range |
（0 ~ 40.00）mg/l(ppm) （0 ~ 200.0）% |
|
resolution |
0.1/0.01 mg/l(ppm) 1/0.1 % | |
|
accuracy |
meter:±0.10 mg/l, overall:±0.40 mg/l | |
|
response time |
≤30 s（25℃, 90%response） | |
| residual current | ≤0.1 mg/l | |
| temp. compensation range | （0 ~ 45）℃(automatic) | |
| salinity compensation range | （0 ~ 45）ppt(automatic) | |
|
atmospheric pressure compensation range |
（66 ~ 200）kpa (manual) | |
|
automatic calibration |
air saturated by water; water saturated by air | |
|
electrode type |
polarogram type | |
| other technical parameters |
data storage |
200 groups |
| storage content | series number, measuring value measuring unit and temperature, | |
|
power |
two aa batteries (1.5v x2) | |
|
size and weight |
meter：(65×120×31)mm/180g；suitcase： (360×270×76)mm/1.6kg | |
| quality and safety certification | iso9001:2000, ce and cmc | |
| working condition |
environment temperature |
5 ~ 35 ℃（0.01grade） |
|
environmental humidity |
≤85% | |
|
ip rating |
ip57 dustproof and waterproof |
| 1. model sx751 ph/orp/conductivity/do meter | 1unit |
| 2. 201t-s plastic ph/atc three-in-one combination electrode | 1pc |
| 3. 301pt-s plastic orp combination electrode | 1pc |
| 4. 2301-s plastic conductivity electrode | 1支 |
| 5. do500 do electrode | 1pc |
| 6. ph standard buffer solution(ph4.00, ph7.00 and ph10.01/50ml) | 1btl/each |
| 7. 1413μs/cm conductivity standard solution (50ml) | 1bottle |
| 8. do503 membrane cap (do electrode use) | 1bottle |
| 9.do502 do electrode inner solution (30ml) | 2pcs |
| 10. cathode polishing paper | 1pcs |
| 11. screw driver | 1pcs |
| 12. spare aa batteries | 2pcs |
| 13. operation manual | 1pcs |
| 14. carrying case | 1pcs |
|
accessory category |
description |
specifications |
|
ph combination electrode |
201t-s plastic three-in-one ph electrode |
measure ph and temperature simultaneously, atc, suited for general ph measurement, 8 pin conncetor. |
|
2503dt-s glass three-in-one combintion ph electrode |
atc, suited for ph measurement of solution under low temperature and pure water, 8 pin connector. | |
|
glass flow cell |
match 2503dt-s electrode. | |
|
orp combination electrode |
301pt-s plastic orp combination electrode |
class="tdbg01"
suited for general orp measurement, 8 pin connector. |
|
conductivity electrode |
2301-s plastic conductivity electrode |
k=1.0 cm-1，atc, suited for conductivity measurement of general water solution, 8 pin connector. |
|
djs-0.1-s glass conductivity electrode |
k=0.1cm-1，atc, suited for ph measurement of of high purity water, 8 pin connector. | |
|
glass flow cell |
match djs-0.1-s electrode. | |
|
do electrode |
do500 do electrode |
polargrafic do electrode, suited for application in lab and field, 8 pin connector. |
|
do electrode accessory |
do503 do electrode membrane cap |
combined membrane cap, special for do500 do electrode, specification: 3 units per group. |
|
do502 do electrode electrolyte |
supplement electrolyte, special for do500 do electrode, specification: 30ml/bottle. | |
|
do501 negative electrode polishing paper |
polishing paper，special for cleaning negative electrode of do500 do electrode, specification:2 pcs/group. | |
|
ph buffer |
ph4.00 buffer |
500ml/250ml/50ml（bottle） |
|
ph6.86 buffer |
500ml/250ml/50ml（bottle） | |
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ph9.18 buffer |
500ml/250ml/50ml（bottle） | |
|
ph7.00 buffer |
500ml/250ml/50ml（bottle） | |
|
ph10.01 buffer |
500ml/250ml/50ml（bottle） | |
|
conductivity standard |
84 μs/cm conductivity standard |
500ml/250ml/50ml（bottle） |
|
1413 μs/cm conductivity standard |
500ml/250ml/50ml（bottle） | |
|
12.88 ms/cm conductivity standard |
500ml/250ml/50ml（bottle） | |
|
146.6 μs/cm conductivity standard |
500ml/250ml/50ml（bottle） | |
|
1408 μs/cm conductivity standard |
500ml/250ml/50ml（bottle） | |
|
12.85 ms/cm conductivity standard |
500ml/250ml/50ml（bottle） | |
|
electrode soaking solution |
ph（orp）combination electrode soaking solution |
500ml/250ml/50ml（bottle） |
|
orp standard solution |
222 mv orp standard solution |
250ml/100ml/50ml（bottle） |
|
portable case |
small portable case（255×210×50）mm |
match single electrode. |
|
big portable case（360×270×76）mm |
match multi- electrode |
