(H-377) Manual
Contents
1. CAS Functions Menu 01 to 10 Esc to Return 1 Fnt01 h377c anal Fnt02 h377f anal View Values Enter Option gt In this example the function h377c ana1 is entered into function 1 in order to record the temperature in degrees Celsius and the function h377f ana1 is entered into function 2 in order to record the temperature in degrees Fahrenheit Function 1 or 2 would be selected as the data source for recording the data For questions about logging please consult the H 350XL or H 500XL owners manual Useful Conversions The following equations are useful for converting the temperature units C 5 9 F 32 To convert degrees Fto degrees C F 9 5 C 32 To convert degrees C to degrees F C K 273 15 To convert degrees Kto degrees C SPECIFICATIONS PERFORMANCE Accuracy Accuracy 0 2 C Response Sampling lt 0 7 Seconds Time Maximum lt 4 Seconds Excitation Range Operating 40 to 80 C Temperature General Temperature 10K Thermistor Sensor MECHANICAL POWER Size Sensor 4 in Lx 0 2 in W 102mm x 5 08mm Sensor 100 ft 33m Cable Weight Sensor 1 5 lbs 0 68kg With cable Shipping Material Shield Plates UV stabilized white thermoplastic Shield Aluminum Mounting Bracket Shield White stainless steel U bolt Clamp Power Sensor 3 5 50 volts DC Requirements Voltage Input Sensor 0 0005mA Consumption Connection Shield Mounting bracket and U bolt clamp2. 2772 H 350XL or H 500XL Ma trademark of Xylem Inc or one of its subsidiaries 2015 Xylem Inc D65 0815
3. 7 combines the thermistor with a 20K Ohm precision reference resistor and when a 5 0 V precision excitation voltage is applied to the probe an analog voltage related to the ambient temperature is produced The thermistor resistance can be calculated as a function ofthe analog output voltage as follows Rt 20000 5 V 1 Where V isthe analog voltage from the probe Once the thermistor resistance is determined it can be applied to the Steinhart and Hart equation in order to calculate the ambient temperature Using the H 377 with the H 350XL or the H 500XL TM The H 377 connects directly to the analog input section of the H 350XL or H 500XL Temperature from the 377 can be logged to the memory card sent to a GOES transmitter etc The following sections explain how to use the H 377 with the H 350 or H 500XL Wire Connections The H 377 has three pigtail wire terminations that connect directly to the analog input section of the H 350XL or H 500XL Table 1 shows the pin each wire should be connected to Table 1 H 377 Wire Connections Recording the Temperature Temperature from the 377 be recorded by the H 350 or H 500XLTM by entering the Steinhart and Hart equation directly into a user math function or by entering a special built in function The user function containing either the Steinhart and Hart equation or the special built in function would then be selected as the data source for the tempera
4. General Sensor 67 Protection Radiation H 380 SS natural aspiration Shield shield suitable for incident rain Available up to 68 km hr Includes adapter for smaller temperature probe COMMUNICATION Output Data Analog Signals Vishay Dale Parameters precision 20K resistor in line with 10K thermistor Xylem 1 The tissue in plants that brings water upward from the roots 2 a leading global water technology company We re 12 000 people unified in a common purpose creating innovative solutions to meet our world s water needs Developing new technologies that will improve the way water is used conserved and re used in the future is central to our work We move treat analyze and return water to the environment and we help people use water efficiently in their homes buildings factories and farms In more than 150 countries we have strong long standing relationships with customers who know us for our powerful combination of leading product brands and applications expertise backed by a legacy of innovation For more information on how Xylem can help you go to www xyleminc com xylem Let s Solve Water EJEIEJEJEJEJEIE YSI Incorporated ll a ttt 1700 1725 Brannum Lane Yellow Springs Ohio 45387 USA Request a Quote Tel 1 435 753 2212 xylem brand Email sales waterlog com Internet www waterlog com Place an Order Tel 1 937 767 7241 Email orders ysi com Customer Support Tel 1 937 767
5. OWNERS MANUAL v1 0 THERMISTOR TEMPERATURE PROBE SEH EES saat inna YSI D65 0815 a xylem brand CONTENTS amp WARRANTY This user manual is a guide for the H 377 temperature probe For more information updated manuals brochures technical notes and supporting software on the H 377 please refer to waterlog com or contact your sales representative For additional assistance please contact us at 1 435 753 2212 or sales waterlog com WaterLOG 1 Chapter 1 2 77 cites teste Eos RP E 3 Theory of Operation anni 3 Using the H 377 with the H 350XL or the H 500XL TM 3 Wire CONNECTIONS istinc reete vhs nimmer 3 Recording Temperaturen innen 4 Useful 2 400 nE E E 5 nc 6 EXT amp Warranty WATERLOG PRODUCTS MANUFACTURED BY YELLOW SPRINGS INSTRUMENTS CO INC are warranted by Yellow Springs Instruments Co Inc YSI to be free from defects in materials and workmanship under normal use and service for twelve 12 months from date of shipment unless otherwise specified in the corresponding YSI pricelist or product manual WaterLOG products not manufactured but that ar
6. e re sold by YSI are warranted only to the limits extended by the original manufacturer Batteries desiccant and other consumables have no warranty 515 obligation under this warranty is limited to repairing or replacing YS s option defective products which shall be the sole and exclusive remedy under this warranty The customer shall assume all costs of removing reinstalling and shipping defective products to YSI YSI will return such products by surface carrier prepaid within the continental United States of America To all other locations YSI will return such products best way CIP Port of Entry INCOTERM 2010 prepaid This warranty shall not apply to any products which have been subjected to modification misuse neglect improper service accidents of nature or shipping damage This warranty is in lieu of all other warranties expressed or implied The warranty for installation services performed by YSI such as programming to customer specifications electrical connections to products manufactured YSI and product specific training is part of YSI s product warranty YSI EXPRESSLY DISCLAIMS AND EXCLUDES ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE YSI is not liable for any special indirect incidental and or consequential damages A complete TERMS AND CONDITIONS OF SALE can be viewed at http www ysi com terms and conditions php CC The WaterLOG H 377temperature probe uses an NTC th
7. ermistor and a precision reference resistor fully potted in a stainless steel tube for accurate water or air temperature measurement Key Features Measurement range 40 C to 80 C e Measurement accuracy 0 2 C Sealed stainless steel probe for water air temperature measurement Includes 100 feet of shielded cable e Easily used with the WaterLOG H 350XL or H 500XL M Theory of operation The H 377 uses a thermistor and resistor combination for a simple yet precise temperature measurement of water or air The thermistor is classified as a Negative Temperature Coefficient NTC thermistor This means that as the ambient temperature increases the resistance of the thermistor decreases The resistance of the thermistor has a non linear relationship with the ambient temperature according to the Steinhart and Hart equation as follows T21 a b Ln Rt c Ln Rt 3 Where T is the ambient temperature in degrees Kelvin Rt is the resistance of the thermistor Ln signifies the natural logarithm and a b and c are the thermistor coefficients The thermistor coefficients a b and c are determined by simultaneously solving the Steinhart and Hart equation for three temperature values and three corresponding resistance values taken from a Resistance vs Temperature chart provided by the thermistor manufacturer The thermistor coefficients for the H 377 are as follows 0 0010291636 b 0 0002391251 0 0000001566 37
8. ture measurement The box below shows an example of how the Steinhart and Hart equation would be entered using the functions menu from the PC menu mode of the H 350XL or H 500XLTM Functions Menu 01 to 10 Esc to Return 1 Fnt01 0 0010291636 2 Fnt02 0 0002391251 3 Fnt03 0 0000001566 4 Fnt04 20000 5 anal 1 5 Fnt05 1 fnt01 fnt02 In fnt04 fnt03 In fnt04 3 273 15 7 Fnt07 IV View Values Enter Option gt In this example functions 1 through 3 are used to define the thermistor coefficients a b and c Function 4 is used to calculate the thermistor resistance based on the analog output voltage from the H 377 connected to analog input channel one Function 5 is used to calculate the temperature in degrees Celsius using the Steinhart and Hart equation note function 5 uses the space for both functions 5 and 6 The sign included in functions 1 through 4 signify that these functions need not be included in the logging report Function 5 would be selected as the data source in the logging report GOES data options etc for the temperature measurement The next box shows an example of how to enter the special built in functions for recording the temperature with the H 350XL or H 500XLTM These special functions combine all of the equations entered in the previous example into one simple function call These special built in functions are available beginning with firmware version 1 13 4
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