Ambient temperature range

Operating and Storage Ambient Temperature Ranges Outside the Product... 

Here m is electron mass, N is the number density of gas molecules, B is the rotational constant, and q = (8/15)jta02Q2, ag and Q being respectively the Bohr radius and the quadrupole moment of the molecule. The experimental energy loss rate for nitrogen agreed well with Eq. (8.1) over the ambient temperature range 300-735 K. Typical values are -0.5 ts at 300 K and 6 torr, and -1 p.s at 735 K and 4 torr. The variation of relaxation time with gas temperature and pressure are also well predicted. For oxygen, Mentzoni and Rao (1965) measure relaxation times -160-350 ns for T = 300-900 K and at 3 torr. 

Operating temperature range Ambient temperature can range from -40°C to 60°C Operational over ambient temperature range, including high solar loads while parked, cold starts, or high-altitude conditions... 

Insertion of the ambient temperatures in Eq. 1 results R0 in and a. Since the ambient temperature is calculated from a polynomial funtion (eq. 2) it is necessary to determine the polynomial coefficients by a least square fit regression over the ambient temperature range 0-50°C. Together with S0,. Si, b, and c, these values are written by the calibration computer to the non volatile memory of the microcontroller. As a calibration check two additional blackbody readings are performed at a third ambient temperature (see Fig. 3.48). 

In this case, this equation is commonly referred to as Clausius-Clapeyron equation (e.g., Atkins, 1998). We can integrate Eq. 4-7 if we assume that Avap/7, is constant over a given temperature range. We note that AvapHt is zero at the critical point, Tc, it rises rapidly at temperatures approaching the boiling point, and then it rises more slowly at lower temperatures (Reid et al., 1977). Hence, over a narrow temperature range (e.g., the ambient temperature range from 0°C to 30°C) we can express the temperature dependence of p by (see Eq. 3-51) ... 

Finally, very often vapor pressures are reported only for one particular temperature (e.g., 20°C or 25°C, as in Appendix C). Since vapor pressure is strongly dependent on temperature, it is necessary to be able to extrapolate such values over the ambient temperature range. Hence, it is necessary to know the enthalpy of vaporization or sublimation at ambient temperature. As we have seen in Section 4.3, for liquid compounds, a proportionality between AvapHt and is observed (Fig. 4.5). This... 

Assuming that this Avap/7, value is constant over the ambient temperature range, it can be used to estimate pH at other temperatures (see also Eq. 3-51) ... 

Note that this Hi value represents an average value for the ambient temperature range. 

A colleague of yours who works in oceanography bets you that both the solubility as well as the activity coefficient of naphthalene are larger in seawater (35%o salinity) at 25°C than in distilled water at 5°C. Is this not a contradiction How much money do you bet Estimate C and for naphthalene in seawater at 25°C and in distilled water at 5°C. Discuss the result. Assume that the average enthalpy of solution (A wsHh Fig. 5.1) of naphthalene is about 30 kJmol-1 over the ambient temperature range. All other data can be found in Tables 5.3 and 5.7 and in Appendix C. 

Atomic diamagnetic susceptibilities are of the order of 2 x 10-10 m3 mol-1 atomic paramagnetic susceptibilities, at ambient temperature, range up to 3 x 10-7 m3 mol-1. A list of some diamagnetic susceptibilities for common atoms and ions is given, for example, in references 166 and 167. 

The formation of 2(NO) was too rapid to monitor by standard stopped-flow spectrophotometry, but the kinetics could be accessed using a low-temperature stopped-flow accessory. Second-order rate constants varied little in the range of —40 to —70 °C, but a significantly negative (—118 J/(mol K)) value of the entropy of activation was obtained. The reverse reaction, dissociation of NO, could be characterized kinetically, but some doubt was expressed about the accuracy of the parameters. Laser flash photolysis could be applied in the ambient temperature range and the value of AS for the forward reaction of Equation 7.48 was confirmed at... 

Extensive, reviewed tabulated pollutant data also exist (see subsection Solubilities in Sec. 2 of this handbook). Any single tabulated Henry s law constant H is published with its measurement temperature, typically 20 or 25°C. The constant H for a subcritical pollutant (i.e., toluene) is proportional to its pure component vapor pressure Psat, and therefore H is an exponential function of temperature T. Using Henry s and Raoult s laws, a pollutant s constant H for a given ambient design temperature can be estimated by using its tabulated value and its vapor pressure, by extrapolating < 25°C over the ambient temperature range (4°C < T < 50°C), from T to T2 ... 

The X indicates a special condition. In this case, reference is made to the extended ambient temperature range... 

Apparatus grouping and temperature classification are described in Chapter 4, especially in Table 4.1 Part A and Table 4.2 Part A for EN and IEC specifications. As a general rule, the ambient temperature (in service) for explosion protected electrical apparatus is limited to the range from 20°C to +40°C. Deviating ambient temperature ranges shall be indicated, e.g. -30°C = Tamb =s +60°C, or the apparatus shall be marked with the symbol X, which indicates special conditions in general. 

Type of protection EEx ib I Certificate BVS 96.D.1146 Supply voltage 10-12 V DC Supply current <100 mA Ambient temperature range -20°C =s Tamb =s +70°C (b) Antenna with adapter and monitoring unit. 

Auxiliary power +12—r30V DC Power consumption max. 700 mW Measured value display LCD Ambient temperature range -10°C—r55°C ... 

Ambient temperature range -40°C Tamb =s +80°C Cable impedance Z = 50... 

Supply voltage 8 V DC Current 3 mA (object not detected) 1 mA (object detected) Switching frequency 200-1000 cps Self-inductance 44-50 jxH Self-capacitance 65-89 nF IP protection code IP 67 or 68 Ambient temperature range ... 

TEMA][McS04] was selected for use over an ambient temperature range ( 0-100°C) as it is reasonably inexpensive, biodegradable and has a known... 

In ambient temperature range of 20-35°C there is a close similarity between butterfat, palm oil, and European shortening. It has, so to speak, been hydrogenated by nature to be very close to many specifications for shortenings and vegetable ghee. 

Installation temperature Cure conditions Inside temperature Inside pressure Ambient temperature Inner film conductance Outer film conductance Operating conditions Maximum operating temperature Maximum pressure Ambient temperature range... 

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